Osa Weather (Next 3 days): The snow forecast for Osa is: Light rain (total 2.0mm), mostly falling on Thu night. Very mild (max 10°C on Fri afternoon, min 2°C on Sat night). Winds decreasing (fresh winds from the WSW on Thu afternoon, calm by Sat night).
Osa Weather (Days 4-6): Mild at first with light rain (total 4.0mm) on Mon night followed by colder weather and light fall of snow, heaviest on Tue night. Freeze-thaw conditions (max 8°C on Sun morning, min -3°C on Tue night). Winds increasing (light winds from the W on Sun morning, fresh winds from the NW by Tue night).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 5 |  | ||||
| Bottom Lift: | 8 | |
Latest snow reports near Osa:
Thursday 15 | Friday 16 | Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
| |  |  | |  |  | | | | | | | |  |  | |  | |
cloudy | cloudy | rain shwrs | clear | clear | clear | some clouds | clear | clear | clear | clear | clear | some clouds | some clouds | light rain | light snow | light snow | mod. snow | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 9 | |
— | — | 2 | — | — | — | — | — | — | — | — | — | — | — | 4 | — | — | — | |
max °C | 8 | 9 | 7 | 9 | 10 | 5 | 8 | 7 | 3 | 8 | 8 | 3 | 7 | 7 | 4 | 3 | 2 | -1 |
min °C | 5 | 7 | 3 | 6 | 5 | 3 | 6 | 4 | 2 | 5 | 3 | 2 | 5 | 5 | 2 | 1 | -1 | -3 |
0 | 2 | -1 | 4 | 3 | -1 | 3 | 3 | 2 | 3 | 1 | 0 | 3 | 2 | -3 | -4 | -7 | -11 | |
69 | 79 | 89 | 47 | 30 | 26 | 61 | 57 | 65 | 51 | 56 | 63 | 70 | 80 | 98 | 89 | 96 | 97 | |
1800 | 1950 | 1800 | 2100 | 2000 | 2250 | 1800 | 1800 | 2150 | 2350 | 2200 | 2050 | 1750 | 1450 | 1350 | 750 | 850 | 350 | |
 | 7:18 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — |
 | — | 5:22 | — | — | 5:22 | — | — | 5:23 | — | — | 5:24 | — | — | 5:25 | — | — | 5:27 | — |
Light rain (total 2.0mm), mostly falling on Thu night. Very mild (max 10°C on Fri afternoon, min 2°C on Sat night). Winds decreasing (fresh winds from the WSW on Thu afternoon, calm by Sat night).
Mild at first with light rain (total 4.0mm) on Mon night followed by colder weather and light fall of snow, heaviest on Tue night. Freeze-thaw conditions (max 8°C on Sun morning, min -3°C on Tue night). Winds increasing (light winds from the W on Sun morning, fresh winds from the NW by Tue night).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 11 Jan 2026 |
| Snow Alerts | Create Alert |
0.3 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.3 | Powder days Fresh snow, limited sun, any wind. |
0.3 | Bluebird days Average snow, mostly sunny, light wind. |
The above table gives the weather forecast for Osa at the specific elevation of 700 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Osa. To access the weather forecasts for the other elevations, use the tab navigation above the table. For a wider view of the weather, check out the Weather Map of Japan.
Click here to read further information on freezing levels and how we forecast our temperatures.
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